【单选题】在典型生长曲线中,细胞产量最高的时期是( )。
【单选题】He told me ______ subject he liked best.
【简答题】He told me he liked drawing the ____________________ on the map before taking a trip when he was in England.
【简答题】观察下面的几个算式: 13×17=221可写成100×1×(1+1)+21; 23×27=621可写成100×2×(2+1)+21; 33×37=1221可写成100×3×(3+1)+21; 43×47=2021可写成100×4×(4+1)+21; …… …… 根据上面规律填空: 小题1:83×87可写成 . 小题2: 可写成 . 小题3:计算:1993×1997= .
【单选题】在典型生长曲线中,细胞产量最高的时期是在( )。
【简答题】He told me which subject he liked best .
【单选题】He told me which subject he liked best.
【简答题】想想算算: (1)1+3+5+7+9+11+13+15+17+19+21+23+25 = = = (2)(2+3+…+2002+2003)-(2+3…+2001+2002) = =